<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>商品管理</el-breadcrumb-item>
          <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片试图区域 -->
        <el-card>
            <!-- 搜索和添加按钮区域 -->
            <el-row :gutter="20">
              <el-col :span="8">
                  <!-- 带搜索按钮的输入框 -->
                  <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable v-on:clear='getGoodsList'>
                    <el-button slot="append" icon="el-icon-search" v-on:click="getGoodsList"></el-button>
                  </el-input>
              </el-col>
              <el-col :span="4">
                  <el-button type="primary" v-on:click="goAddpage">添加商品</el-button>
              </el-col>
            </el-row>

            <!-- 表格区域 -->
            <el-table :data="goodsList" border stripe>
              <el-table-column type="index"></el-table-column>
              <el-table-column prop="goods_name" label="商品名称"></el-table-column>
              <el-table-column prop="goods_price" label="商品价格(元)" width="95px"></el-table-column>
              <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
              <el-table-column prop="add_time" label="创建时间" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
              </el-table-column>
              <el-table-column label="操作" width="130px">
                <template slot-scope="scope">
                   <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                   <el-button size="mini" type="danger" icon="el-icon-delete" v-on:click='removeById(scope.row.goods_id)'></el-button>
                </template>
              </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data() {
        return {
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:10
            },
            // 商品列表数据数组
            goodsList:[],
            // 总数据条数
            total:0
        };
    },
    created() {
        this.getGoodsList()
    },
    mounted() {

    },
    methods: {
        getGoodsList: async function(){
            const {data:res} = await this.$http.get('goods',{params:this.queryInfo})
            if(res.meta.status !== 200){
                return this.$message.error('获取商品列表数据失败！')
            }
            //console.log(res);
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        // 分页组件的 pagesize 发生变化，触发这个函数
        handleSizeChange:function(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 分页组件的 pagenum 发生变化，触发的函数
        handleCurrentChange:function(newNum){
            this.queryInfo.pagenum = newNum
            this.getGoodsList()
        },
        // 根据当前行的id值删除相应的商品
        removeById: async function(id){
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
            }).catch(err=>err)

            if(confirmResult !== 'confirm'){
                return this.$message.info('取消删除')
            }

            // 确认删除后，发起请求
            const {data:res} = await this.$http.delete(`goods/${id}`)
            if(res.meta.status !== 200){
                return this.$message.error('删除商品失败！')
            }
            this.$message.success('删除商品成功！')
            this.getGoodsList()
        },
        // 编程式导航，点击按钮跳转到添加商品页面
        goAddpage:function(){
            this.$router.push('/goods/add')
        }

    }
};
</script>

<style scoped lang="less">
    
</style>
